baber/WOPTO huggingface dataset:
Patent GB-899069-A (GB)
Title: Improvements in or relating to apparatus for measuring voltages according to the comparison method
IPC: G01R1/28
Filed: 1958-12-17
Abstract: 899,069. Analogue - to - digital converters. PHILIPS ELECTRICAL INDUSTRIES Ltd. Dec. 17, 1958 [Dec. 20, 1957], No. 40731/58. Class 40 (1). [Also in Group XL (c)] A voltage to be measured is subtracted from a comparison voltage which is variable in discrete steps and the difference voltage controls the application of pulses at terminal 11 or 12, Fig. 3, to a first counting-chain of cold-cathode tubes 14 or a second counting-chain of tubes 15 so as to increase or decrease the comparison voltage appearing across resistor 13 and reduce the difference voltage to zero. Successive pulses supplied to the second counting-chain fire successive tubes 15, and as each one fires a positive pulse is supplied over capacitor 22 to extinguish the corresponding tube 14 in the first chain if that tube is conducting. When the comparison voltage equals the input voltage, no further pulses are applied to terminals 11, 12 and the number of tubes 14 which are conducting is a measure of the input voltage. The difference voltage is chopped and differentiated and the resulting pulses are fed to terminal 32, Fig. 6. Tubes 33, 34 are fed with sinusoidal voltages which differ in phase by 180 degrees and the positive peaks of which coincide respectively with the positive pulses produced from positive and negative difference voltages so that either tube 33 or tube 34 is fired successively to apply pulses to the corresponding counting- chain until the difference voltage is zero.
Patent GB-884275-A (GB)
Title: Transistor bistable circuit
IPC: H03K3/012
Filed: 1958-12-17
Abstract: 884,275. Transistor multi - stable state circuits. INTERNATIONAL BUSINESS MACHINES CORPORATION. Dec. 17, 1958 [Dec. 23, 1957], No. 40743/58. Class 40(6). A bi-stable circuit comprises two grounded base transistor stages having constant current emitter supplies and each having its emitter coupled to the collector of the other common base stage through a grounded emitter stage of the opposite conductivity type, switching between the two conductivity states of the circuit being effected by further transistors connected between the emitter of each grounded emitter stage and the collector of the other grounded base stage. In the Figure, when transistor 5 is conducting, the whole of the constant current supply 17, 22 passes through transistor 5 so that transistor 4 is cut off. The collector potential of the latter approaches the value of supply 21 and this is fed to the base of transistor 3 to cut that transistor off. Accordingly the whole of the current from a second constant current supply 17, 18 passes through transistor 2. If a pulse is now applied to the base of transistor 1, the constant current supply through resistor 18 is by-passed to transistor 1 and no current passes through transistor 2. Accordingly, its collector potential rises in a negative direction cutting off transistor 5 and so diverting the constant current supply from resistor 22 to transistor 4. At the same time transistor 1 effectively connects the positive supply 17 to the base of transistor 3 rendering that transistor conductive so that it will pass the current previously passing through transistor 2. The circuit may be restored to its original condition by applying pulse to the base of transistor 6. Diodes 19 and 24 prevent current flow to the emitters of transistors 1 and 4 when their bases are negative while diodes 27 and 28 clamp the collector voltages of transistors 3 and 5 preventing these transistors from saturating. The latter diodes also prevent high potentials being applied to the emitter base path of transistors 2 and 4. Output pulses may be derived from terminals 30 and 39. Additional transistors 1A, 1B, 6A and 6B may be connected in parallel with the transistors 1 and 6 to effect change-over of the circuit and these provide an "OR" input arrangement.
Patent GB-1159972-A (GB)
Title: Improvements in or relating to Pressure Vessels
Inventor: MORRIS DAVID RICHARD
IPC: F17C1/16
Filed: 1965-09-24
Abstract: 1,159,972. Pressure vessel. ENGLISH ELECTRIC CO. Ltd. 26 Oct., 1966 [24 Sept., 1965], No. 40756/65. Heading B1X.  A pressure vessel includes a stainless steel inner shell 10 and a reinforcing outer layer 13 of resin-bonded filamentous material, for example glass fibres bonded with epoxy or polyester resin. Rings 11 surrounding the openings of shell 10 may also be of stainless steel and are externally threaded. In making the vessel, shell 10 may be rotated while the resin-coated filament is wound on it, then the assembly is heated to cure the resin.
Patent GB-843907-A (GB)
Title: Preparation of improved electroluminescent phosphors
IPC: H05B33/14
Filed: 1958-12-17
Abstract: 843,907. Electroluminescent materials. SYLVANIA ELECTRIC PRODUCTS Inc. Dec. 17, 1958 [Dec. 30, 1957], No. 40786/58. Class 39(1). An electroluminescent phosphor comprises a base material of the zinc sulphide type, wherein up to 20 mole per cent of zinc may be replaced by cadmium and up to 30 mole per cent of sulphur may be replaced by selenium, a copper activator and at least one halide coactivator selected from chloride, iodide and bromide. The mixture is fired at a temperature between 1000 and 1300‹C to produce an intermediate product having activator and coactivator concentrations of 10<SP>-4</SP> to 5 x 10<SP>-3</SP> gram atoms per mole of the base material and is then mixed with at least 10-5 additional gram atoms per mole of the activator before being refired at a temperature between 700 and 950‹C. Preferably, if the mole ratio of activator to coactivator in the intermediate product is less than 1, sufficient copper is added to adjust the ratio to about 1; and if the final phosphor has a mole ratio of activator to coactivator in excess of 1, the phosphor is washed in a cyanide solution to reduce the ratio to about 1. The firing steps may be effected in air or helium or other inert atmosphere, the optimum temperatures being 1150 to 1200‹C and 800 to 850‹C., respectively. The copper activator may be added to the mixture as copper sulphate and the halide coactivator as a mixture of barium, magnesium and sodium chlorides or as potassium iodide, or potassium bromide. Five specific examples are given of processes resulting in phosphors exhibiting shades of blue, green and yellow electroluminescence. The phosphor may be dispersed in castor oil and placed in a lamp 1 inch square by 0À005 inches thick.
Patent GB-1416942-A (GB)
Title: Indicator apparatus
IPC: G01P3/46
Filed: 1973-08-30
Abstract: 1416942 Measuring golf club head velocity electrically N M BURDICK 30 Aug 1973 [2 Oct 1972] 40797/73 Heading G1N Apparatus for measuring the velocity of a golf club head 82 comprises a wire loop 72 adapted to be engaged by the moving club head and coupled to a magnet 66. Movement of the active section 76 of the loop induces a voltage therein, which voltage is passed via low pass filter 20, active filter 22, and amplifier 24 to a peak detector 38  including amplifier 170 which acts with capacitor 178 to integrate the signal from the loop. The voltage at junction 176 forward biases the diode 190 and capacitor 184 is charged thus forward biasing switch 180 to increase current 340 until current 340 equals current 342 when the rate of change of the integrated signal at junction 176 goes to zero and the output signal from amplifier 206 switches to a "high" state. Transistor T224 is enabled and T226 turned off thereby generating a signal to turn T264 and T276 on to produce a reference voltage at junction 284 which biases T218 on and T286 on whereby the output signal from amplifier 170 is connected to earth via diode 305. Thus diode 190 is reverse biased and prevents further charging of capacitor 184, amplifier 24 is biased off by bias control 36 and current 342 goes to zero thus current 340 flows through resistance 192 developing a voltage drop thereacross equal to the developed sample signal which is connected to the meter network 44 and nulled on the meter 310 by adjustment of variable resistor 328 to provide an output indication of the velocity of the club head 82. Delaying the measurement of the velocity until its integral has reached the predetermined level ensures that the loop has been moved a sufficient distance to allow it to conform to the shape of the golf club head so that the indicated velocity is accurate, the distance being one tenth of an inch in a preferred embodiment.
Patent GB-1409736-A (GB)
Title: Methods for fabricating laminated fluted structures
IPC: B29C33/44
Filed: 1972-09-04
Abstract: 1409736 Wrapping flexible cores BOEING CO 4 Sept 1972 [1 Oct 1971] 40997/72 Heading B8G [Also in Division B5] A laminated fluted structure comprising two spaced parallel skins and a series of transverse webs extending between the skins and intrinsically attached thereto to define a series of hollow parallel channels, is produced by wrapping successive layers of a fibre material impregnated with thermosetting resin around a plurality of parallel hollow mandrels of flexible silicone rubber for forming the fluted structures, curing the resin under augmented pressure and heat and withdrawing the flexible hollow mandrels by pulling them slowly with increasing tension so that they contract in cross-section. A compound contour radome for an aircraft may be produced by positioning a first plurality of sheets of fibre material impregnated with thermosetting resin on to a male tool, providing a plurality of hollow flexible silicone rubber mandrels wrapped with the fibre material in selected positions on the male tool until the fluted core lay up is completed, positioning a second plurality the sheets of fibre material over the mandrels, placing a female mould on to the completed lay up, turning over the female mould and male tool, removing the male tool, curing the resin by heating at 100-600 F. at a pressure of 20- 300 psi for ¢-6 hours, cooling under pressure, removing the structure produced from the female mould and placing it on the male tool and removing the mandrels by pulling gently with increasing tension on the mandrels. Removal of the mandrels may be facilitated by cutting them into two lengths prior to wrapping and bonding the lengths together in abutting relation, e.g. with adhesive, so that when pulled from each end when the mandrels are to be removed from the laminated structure, the split juncture ruptures and they are removed in two pieces. Cables may be inserted lengthwise through the mandrels to increase the compressive resistance of the flexible mandrels and may be removed prior to removal of the mandrels. The mandrels may be of triangular, rectangular or round crosssection. The male tool may be mounted on a support base incorporating a ring located on guide pins and engaging hooks attached to the ends of the mandrels so that by actuation of a jack the ring strips the mandrels from the fluted core. Prior to the lay up the male tool may be covered with a caul sheet of fibre laminate material held in place on the male tool with masking tape. When the male tool is removed from the female mould the masking tape is removed so that the caul sheet is left in position in the female mould where it remains during curing. The fibre material may be of glass, quartz, graphite, boron or metal. Suitable resins are polyester, epoxy, phenolic, silicone, polyimide and melamine resins.
Patent GB-1075025-A (GB)
Title: Screening device
IPC: B07B13/07
Filed: 1965-09-28
Abstract: 1,075,025. Screening apparatus. F. K. MOSENSEN. Sept. 28, 1965, No. 41236/65. Heading B2H. Material to be separated is fed down a shoot 10 on to one or more screen-decks A, B, C formed of inclined rods, adjacent rods being differently inclined so that the spacing between them increases from their feed ends to their discharge ends. As shown, the rods 1, 2 of each deck are arranged in two diverging planes and the spacing between adjacent rods in the horizontal direction decreases in successively lower screen-decks so as to separate out three fractions down shoots 12, a partitioned box 18 being provided below the lowermost screen-deck to collect three further fractions. The screen-decks may be mounted in superposed or stepped relation on a frame 14 vibrated by an eccentric 16. In Fig. 3 (not shown), the rods terminate at three different levels. The spacing between some of the rods may be greater than between others, Fig. 4 (not shown) so as to counteract the tendency for particles to move to one side during travel over the rods. If desired, the rods may be arranged to produce a staggering movement of the particles during the travel. In Fig. 6 (not shown), the rods are divided along their lengths.
Patent GB-1504939-A (GB)
Title: Crane cables of plastics material
IPC: D07B1/02
Filed: 1975-10-09
Abstract: 1504939 Cables of plastics material FELTEN & GUILLEAUME CARLSWERK AG 9 Oct 1975 [22 Nov 1974] 41380/75 Heading D1T A cable is formed from cable elements 6 that each comprise a plurality of stranded or plaited yarns, the majority of the cable elements 6 having similar or substantially similar tensile strength and comprising an aromatic polyamide, the remaining cable element or elements 2 consisting of a plastics material of larger extension at breaking and of lower tensile strength than the elements comprising an aromatic polyamide; each of said majority of cable elements 6 consisting of a core 5 of plastics threads surrounded by twisted yarns 1 of higher tensile strength and lower extension at breaking than the plastics threads, and each of the twisted yarns 1 containing a core 3 of plastics threads surrounded by a layer 4 of threads of higher tensile strength and smaller extension at breaking than the plastics threads. The cable element or elements 2 may consist of threads of stretched polyamides, polyesters or polypropylene. Each of the cable elements may be impregnated with a flexible abrasion-resistant plastics material such as a polyurethane. The cable may include sleeves 7 or 9 or 8 of flexible and abrasion-resistant plastics material, for example polyurethane, a polyamide or silicone rubber.
Patent GB-976127-A (GB)
Title: An improved plug for coaxial cables
Inventor: GREASLEY ERIC ARTHUR
IPC: H01R13/646
Filed: 1962-11-02
Abstract: 976,127. Two part couplings. PRESSAC Ltd. Oct. 8, 1963 [Nov. 2, 1962], No. 41536/62. Heading H2E. When the pin part of a jack-plug, for a coaxial cable, is screwed into the outer metal shield 10, a hard insulating washer 11, mounted on the pin part near its end, is forced against a resilient insulating insert 15, inside the shield 10, to secure in position the ends of the core 7 and of the braiding 17 of the cable. The pin part has an outer tubular portion 1 threaded at 8 to engage the metal shield 9 which contacts the braiding 17. An inner pin 2 is insulated from the tube 1 by a washer 3 and, at its end 4, is deformed over a contact washer 5, which, on assembly of the plug, contacts the bared cone 7 (at 7b). The ends of the core 7 and the braiding 17 are insulated from one another by means of the resilient insert 15 which is held within the shield 12 by a metallic guide sleeve 13. On assembly of the plug, part 13 of the guide sleeve is forced against the inside wall of the shield and part 13a clamps the braiding 17 against this wall, the screwing in of the pin part being resisted electrically by the insert 15.
Patent GB-1300840-A (GB)
Title: Optical resolution of chrysanthemic acid
IPC: A01N53/00
Filed: 1970-08-28
Abstract: 1300840 Chrysanthemic acid SUMITOMO CHEMICAL CO Ltd 28 Aug 1970 [12 Sept 1969] 41582/70 Heading C2C ()-Chrysanthemic acid is resolved by heating it with L-lysine in a water-miscible solvent either alone or in admixture with water or methanol, cooling the mixture to crystallize (+ )-chrysanthemic acid L-lysine salt and decomposing the salt with a mineral acid. The heating may be carried out at 40 to 120 C. and the cooling from + 30 to - 30 C. Preferred water - miscible solvents include methanol, ethanol, isopropanol, acetone, dioxane, tetrahydrofuran, N,N-dimethyl formamide or dimethyl sulphoxide.
Patent GB-1075790-A (GB)
Title: Improvements in or relating to the manufacture of pressure cylinders
IPC: B21D51/24
Filed: 1964-10-14
Abstract: 1,075,790. Making pressure vessels; soldering. C. BOMBINI. Oct. 14, 1964 [June 17, 1964], No. 41839/64. Headings B3A and B3R. A method of making a pressure vessel, such as an aerosol container, comprises forming two interengageable sheet metal elements A, B and soldering or brazing the elements together so that the end portion of the element B is covered by a ridge of solder C 1 . The elements A, B are deep drawn in tinned steel sheet and may be interconnected by at least one longitudinally welded intermediate tube (E), into which both elements fit, Fig. 4 (not shown). Alternatively, the tube (E) may be deepdrawn and its bottom removed before the end elements A, B are inserted therein.
Patent GB-1427350-A (GB)
Title: Apparatus for launching towing and recovering a submersible body from a vessel
IPC: B66C13/02
Filed: 1973-02-21
Abstract: 1427350 Guiding flexible elements FATHOM OCEANOLOGY Ltd 21 Feb 1973 [29 Feb 1972] 41842/75 Divided out of 1427349 Heading B8 Apparatus for launching, towing and recovering a submersible towable body from a vessel, comprises a winch for storing faired cable 102 at the outer end of which the body is secured in use, a rotatable sheave 316 over which the cable runs, and a roller box 330 rotatable about the sheave axis 218 for guiding the body carrying end of the cable as it leaves the sheave 316, the roller box 330 being biased about the axis 218 to maintain substantially constant contact pressure between the leading edge of the cable 102 and a nose roller 302 mounted in the box 330, and parallel to the sheave axis 218. The roller box further includes a pair of parallel rollers 314 between which the cable 102 passes to prevent lateral displacement of the cable from the sheave. The roller box 330 is supported on arms, journaled on the shaft conveying the sheave 316 and incorporating a cam 312 to which said biasing force is applied by an accumulator powered hydraulic cylinder 304 through a cable 308 secured to the cam profile. The cam profile provides increased torque on the roller box support arms to compensate for the moving centre of gravity of the box and reduced accumulator supply pressure to the cylinder 304 during retraction thereof. The embodiment shown includes a towed body stowage saddle 324 rigid with the box support structure and rotatable into an inverted stowage position, in which a curved plate 318 on the box will guide the cable 102, as it leaves the stowed body. In the embodiment of Fig. 3 (not shown] the saddle is fixed in its lowered position and the roller box structure in pivotable relative thereto.
Patent GB-1507424-A (GB)
Title: Document handling apparatus
IPC: B42F17/00
Filed: 1976-02-02
Abstract: 1507424 Filing papers &c STEELCASE Inc 2 Feb 1976 [3 Feb 1975] 41846/77 Divided out of 1507423 Heading B6E The subject-matter of this Specification is the same as that of the parent Specification but the claims are directed to a plurality of paper handling trays arranged on a supporting frame and the width and height of the trays being different but corresponding to multiples of width and height module.
Patent GB-875205-A (GB)
Title: Improvements relating to rocket propulsion
Inventor: CARTER JOHN MICHAEL MINDEN
IPC: B64C9/38
Filed: 1958-12-31
Abstract: 875,205. Rocket propulsion. IMPERIAL CHEMICAL INDUSTRIES Ltd. Dec. 9, 1959 [Dec. 31, 1958], No. 42271/58. Class 4. A rocket propulsion device has one or more pairs of nozzles, each nozzle of a pair being diametrically opposite to the other and the nozzles of a pair being equidistant from the longitudinal axis of the device, each nozzle being rotatable about an axis which is acutely inclined to the longitudinal axis of the device and which is intersected by the axis of symmetry of the nozzle at such an angle that in one position of the nozzle its axis of symmetry is parallel to the longitudinal axis of the device. Fig. 3 shows the rear end plate of a rocket propulsion device, on which are mounted two pairs of nozzles 40, 42, and 41, 43, which may receive propulsive gases from a common source or distinct sources. The outlet of each nozzle is shown as a full line circle, in the position in which the nozzle is nearest the centre line of the device, when the axis of symmetry of the nozzle is parallel to the centre line. The broken lines 44 show for each nozzle the area swept out by the nozzle outlet as the nozzle is rotated. For pitch control, nozzles 41 and 43 are rotated equally in opposite senses, to produce equal and opposite yawing couples and equal and similar pitching couples. For yaw control, nozzles 40 and 42 are rotated in opposite senses, to produce equal and opposite pitching couples, and equal and similar yawing couples. For roll control, nozzles 41 and 43, or 40 and 42, are rotated in the same sense. Fig. 1 shows one form of rotatable nozzle, comprising a throat 2 and expansion cone 3 with an outer steel shell 4. A steel ring 6 is welded to the shell 4, and a flange 7 on the ring has a groove 8. An annular boss 9 welded to the rear end closure plate 1 of the propulsion unit has a groove 10, the two grooves together with steel balls 11 forming a ball bearing. A sealing ring 15 is provided, and its frictional resistance to rotation is reduced by coating the appropriate surface of ring 6 or boss 9 with P.T.F.E., or by making the sealing ring of P.T.F.E. The insulating material 5, 16 of the nozzle is a close fit on the insulation 17 of the closure plate 1, to protect the seal. Flange 7 is provided with gear teeth 18 for rotation of the nozzle by an electric or hydraulic motor 19. Alternatively, an arm extending from the nozzle may be connected to a linear hydraulic actuator. To enable the axis of the rotation of the nozzle to be normal to the closure plate 1, the plate is made outwardly convex. In another form of nozzle, Fig. 2 (not shown), the ring 6 and flange 7 are replaced by an inset in the nozzle wall, which is of reinforced plastic material. According to the Provisional Specification, the moment of inertia of the nozzle about its axis of rotation should not be much more than that about its axis of symmetry.
Patent GB-931312-A (GB)
Title: Improvements in or relating to dry-cleaning
IPC: D06L1/04
Filed: 1961-11-28
Abstract: A dry cleaning process for textiles comprises using as the dry cleaning solvent a normally liquid chlorofluoro hydrocarbon having in the molecule two carbon atoms and at least two fluorine atoms and preferably having a boiling point of 8 DEG -75 DEG C.  A composition which is suitable for use in such a process comprises, in addition to the solvent, a non-ionic, anionic or cationic emulsifying agent in an amount of up to 2% by weight of the composition; the composition may also contain up to 1% water.  Suitable halogenated hydrocarbons are 1:1:2-trichloro-2:2-difluoroethane, 1:2-dichloro-1:1-difluoroethane, and especially 1:1:2-trichloro-1:2:2-trifluoroethane.  Suitable emulsifying agents are isooctylphenol polyglycol ethers, tetrakis-2-hydroxypropylethylenediamine ester of oleic acid quaternized with dimethyl sulphate and an amine salt of dodecylbenzene sulphonic acid.